US2870650A - Steering gear - Google Patents

Steering gear Download PDF

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Publication number
US2870650A
US2870650A US468106A US46810654A US2870650A US 2870650 A US2870650 A US 2870650A US 468106 A US468106 A US 468106A US 46810654 A US46810654 A US 46810654A US 2870650 A US2870650 A US 2870650A
Authority
US
United States
Prior art keywords
ball
steering
pivot
nut
lever
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US468106A
Other languages
English (en)
Inventor
Stump Eugen
Siegel Hans
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daimler Benz AG filed Critical Daimler Benz AG
Application granted granted Critical
Publication of US2870650A publication Critical patent/US2870650A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D3/00—Steering gears
    • B62D3/02—Steering gears mechanical
    • B62D3/04—Steering gears mechanical of worm type
    • B62D3/06—Steering gears mechanical of worm type with screw and nut
    • B62D3/08—Steering gears mechanical of worm type with screw and nut using intermediate balls or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32114—Articulated members including static joint
    • Y10T403/32122—Trunnion assembly to side of rod
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32114—Articulated members including static joint
    • Y10T403/32131—One member is plate or side
    • Y10T403/32147—Plate or side forms bearing surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32606—Pivoted
    • Y10T403/32631—Universal ball and socket
    • Y10T403/32811—Spring-biased
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18856—Oscillating to oscillating
    • Y10T74/1888—Geared connections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19642—Directly cooperating gears
    • Y10T74/19698—Spiral
    • Y10T74/19702—Screw and nut
    • Y10T74/19744—Rolling element engaging thread
    • Y10T74/19749—Recirculating rolling elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20396—Hand operated
    • Y10T74/20474—Rotatable rod, shaft, or post
    • Y10T74/20492—Gear
    • Y10T74/20504—Screw and nut

Definitions

  • This invention relates to a steering mechanism for motor vehicles and more particularly to a steering gear having a recirculating ball Worm-and-nut mechanism comprising a steering column and a ball nut which are in engagement with each other by one or more endless chains of balls running in matching associated worm-groove raceways, so that the turning motion of the steering column is transformed into an essentially axial movement ofthe ball nut, the movement of which is transmitted by means of a ball. pivot to a steering lever, whose shaft crosses the ball nut.
  • Another-object of the present invention is to provide a steering mechanism whose components are so constructed as to ensure reliable and absolutely positive engagement of the elements for transmitting the motion between ball nutand steering lever.
  • a further'object of the present invention is to provide a steering mechanism whose elements elfecting the transmission of force distinguish themselves by their rugged strength.
  • An important feature of the present invention resides accordingly in having the ball pivot formed as a partspherical, at the most hemispherical or semicircular pivot and madeintegral with the ball nut, the spherical area of contact thereof being toward the side of theball nut at least bounded by the plane extending through-the ecu-- ter of the sphere and lyingperpendicularly to the axis of the part-spherical pivot, so that the part-spherical pivot ioins the ball nut directly with its wide base.
  • the point of application in the transmission of force from the ball pivot to the steering lever may be located directly or almost directly at the periphery of the ball nut body and therewith at the shortest possible distance from the worm-groove raceways in the ball nut receiving the ball train or ball trains.
  • the distance between steering lever and axis of the steering column may be kept at a minimum, so that the distance from the center of the ball pivot to the outer diameter of the internal worm-groove raceways in the ballnut may be of lesser dimension than the radius of the ball pivot. 4
  • a further object of the present invention concerns the reliable and positive absorption of axial forces between ball pivot and ball socket.
  • a still further object; of the present invention concerns an additional safeguard for ensuring also absolutely reliable engagement of; ball pivot. and ball. socket along the largest periphery in case of employment of an axially resiliently supported steering lever even .if the. ball pivot should be raised from the ball socket by occurring road shocks or other driving forces.
  • Fig. 1 is a sectional view of the steering gear taken in the plane of line 1-1 of Fig. 2, and
  • Fig. 2 is apart sectional top plan view of the steering gear taken in the plane of-line 2,2 of Fig. 1.
  • the steering gear includes a steeringrgear housing 10in which are supported, on the one hand, a. steering-wheel spindle or column, 13 by means of thrust, ball bearings 11 and 12, and on the other hand, a steering-gear. shaft 16 with itsv lever 17 by means of sleeve bearings 14.and 15.
  • the steering column 13 with .its ball-worm end pro vided with an external helical groove is in engagement with a ball nut 20 by means of two endless. trains of balls 18 and 19 which run in worm-grooveraceways 21.
  • the balls of each endless ball train are recirculated in a conventional manner from one.end;of the ball worm to its other end by means of. recirculating tubes 22 and 23.
  • the ballv nut 20 is provided with a hemispherical or semi-circular ball pivot 24 made integrally therewith in such amanner that the center 25' of the ball 24is located directly adjacent to the periphery of the ball-nut body proper.
  • the semi-spherical ball pivot 24 engages a matching ball socket 26 formed by aninsert 27 which .is provided with a shoulder 28 and inserted into a bore 29 in the steering lever 17 from the side of the ball nut 20 and which is extended cylindrically toward the ball nut 20 by a distance e beyond. a transverse plane passing through the center 2501": the ball pivot 24.
  • An adfustingscrew in the form of a socket. 31 isadjustably screwed into the cover. 30 of the steering-gear housing 10 and locked by a lock nut 32. Slidably mounted in the socket 31 is. another socket. 33 which in the axial direction thereof is urged against the steeringgear shaft 16 by a spring 34 in such a manner that a continuous abutting engagement between ball pivot 24 and ball socket 26 is ensured.
  • the lever 17 is dimensioned so short in length that the axis of the ball pivot 24 and a plane passing through the axis of the steering column and in parallel with the axis of the steering-gear shaft 16 enclose an angle 0c when the steering gear is in its mid-position.
  • the present invention provides an improved steering gear which distinguishes itself by its exceptional compact structure and other advantageous features, namely, the force transmitted by the ball nut 20 to the steering lever 17, which for all practical purposes acts through the center 25 of the ball pivot 24, is effective at the shortest possible distance from the axis of the steering clumn 13 Furthermore, the inclination of the ball pivot 24 in conformity with the angle at makes for a still compacter structure. And if road shocks or other driving shocks occur in a direction opposite to the action of the spring 34, there will still be maintained an annular area of contact between the ball pivot 24 and the ball socket 26 on account of the cylindrical extension e thereof.
  • a steering gear comprising a steering column provided with external ball-worm grooves, a ball nut surrounding said steering column with clearance and provided with internal ball-worm grooves, a ball train running in the grooved raceways formed by the two matching ball-worm grooves and effecting the engagement of said steering column with said ball nut for transmitting the steering motion, a steering-gear shaft for passing on the steering motion arranged transversely to said steering column, a steering lever arranged on the inner end of matching surfaces of said cavity and said member and arranged with its wide base directly on said ball nut and being made integrally therewith.
  • a steering gear according to claim 1 further comprising a bore in said steering lever, and an insert containing said spherical cavity arranged in said bore.
  • a steering gear according to claim 1 wherein said steering lever is so shaped and of such length that a plane passing through the axis of said hemispherical member and through the axis of the steering column subtends an acute angle With a plane passing through said steering column and parallel to said steering gear shaft when said steering gear is in the mid position thereof.
  • a steering gear comprising a steering column provided with external ball-worm grooves, a 'ball nut surrounding said steering column with clearance and provided with internal ball-Worm grooves, a ball train running in the grooved raceways formed by the two matchin direct force-transmitting engagement therewith over the g ing ball-Worm grooves and effecting the engagement of,
  • a steering gear according to claim 5 in combination with spring means urging said steering lever with its spherical cavity constituting a ball socket into Working engagement with said ball pivot incorporated in said ball nut.
  • a steering gear comprising a steering column pro vided with external helical ball grooves, a ball nut surrounding said steering column'with clearance and pro vided with internal helical ball grooves, a chain of balls moving in the grooved raceways formed by the two matching helical ball grooves and effecting engagement of said steering column with said ball nut for transmitting the steering motion from the former to the latter, a steering-gear shaft for passing on the steering motion extending transversely to said steering column, a steering lever at the inner end of said steering-gear shaft and extending therefrom toward one side of said ball nut, a hemispherical cavity in the form of a ball socket provided directly in said steering lever, an essentially hemispherical member with a wide base and constituting a ball pivot of a shape essentially complementary to said cavity and being in direct force-transmitting engagement therewithover substantially the entire hemispherical surface thereof, said member being arranged with the Wide base thereof directly on said ball nut and being made integrally therewith, and said

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Steering Mechanism (AREA)
  • Transmission Devices (AREA)
US468106A 1953-11-11 1954-11-10 Steering gear Expired - Lifetime US2870650A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE760195T 1953-11-11

Publications (1)

Publication Number Publication Date
US2870650A true US2870650A (en) 1959-01-27

Family

ID=31964707

Family Applications (1)

Application Number Title Priority Date Filing Date
US468106A Expired - Lifetime US2870650A (en) 1953-11-11 1954-11-10 Steering gear

Country Status (5)

Country Link
US (1) US2870650A (sv)
BE (1) BE506054A (sv)
CH (2) CH297223A (sv)
FR (2) FR1043259A (sv)
GB (2) GB698778A (sv)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113469A (en) * 1959-12-19 1963-12-10 Daimler Benz Ag Steering gear
US3581585A (en) * 1969-05-26 1971-06-01 Joseph K Barnoski Harmonic oscillator apparatus
US4604911A (en) * 1982-02-26 1986-08-12 Hiroshi Teramachi Recirculating-ball rotary-to-linear converter with an improved ball return guide

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE936250C (de) * 1953-06-30 1955-12-07 Fulminawerk K G Franz Mueller Lenkgetriebe, insbesondere fuer Kraftfahrzeuge
BE506054A (sv) * 1953-11-11
DE953579C (de) * 1955-03-25 1956-12-06 Daimler Benz Ag Kraftfahrzeuglenkgetriebe
DE1062559B (de) * 1956-02-29 1959-07-30 Fulminawerk K G Franz Mueller Hydraulische Hilfskraftlenkung fuer Kraftfahrzeuge
DE1073323B (de) * 1956-10-02 1960-01-14 Zahnradfabrik Friedrichshafen Ak tiengtsellschaft Priedrichshafen Lenkgetriebe fur Kraftfahrzeuge beste hend aus einer Lenkschnecke und einer auf dieser langsbeweglichen Mutter
US2936643A (en) * 1957-06-26 1960-05-17 Gen Motors Corp Means for automatically maintaining steering gear over-center adjustment

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1893764A (en) * 1931-02-06 1933-01-10 Douglas John George Steering gear
US2019927A (en) * 1931-05-26 1935-11-05 Audi Ag Screw and nut steering gear for automobiles
DE642847C (de) * 1934-02-27 1937-03-17 Inhaber A Krumbiegel Kugelgelenkkupplung fuer die Anhaenger von Kraftfahrzeugen
US2489534A (en) * 1945-10-23 1949-11-29 Mill Alfred Paul Steering gear mechanism
DE822479C (de) * 1949-09-09 1951-11-26 Daimler Benz Ag Ringfoermiges Kugelgelenk, insbesondere fuer Lenkgetriebe von Kraftfahrzeugen
US2654265A (en) * 1951-02-10 1953-10-06 Daimler Benz Ag Steering gear
GB698778A (en) * 1953-11-11 1953-10-21 Daimler Benz Ag Improvements relating to screw and nut gearing
US2688260A (en) * 1951-02-10 1954-09-07 Daimler Benz Ag Gear for converting rotary motion into longitudinal motion
DE918301C (de) * 1950-10-16 1954-09-23 Ehrenreich & Cie A Kugelzapfen ohne Vollkugel, insbesondere fuer die Lenkgestaenge von Kraftfahrzeugen

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1893764A (en) * 1931-02-06 1933-01-10 Douglas John George Steering gear
US2019927A (en) * 1931-05-26 1935-11-05 Audi Ag Screw and nut steering gear for automobiles
DE642847C (de) * 1934-02-27 1937-03-17 Inhaber A Krumbiegel Kugelgelenkkupplung fuer die Anhaenger von Kraftfahrzeugen
US2489534A (en) * 1945-10-23 1949-11-29 Mill Alfred Paul Steering gear mechanism
DE822479C (de) * 1949-09-09 1951-11-26 Daimler Benz Ag Ringfoermiges Kugelgelenk, insbesondere fuer Lenkgetriebe von Kraftfahrzeugen
DE918301C (de) * 1950-10-16 1954-09-23 Ehrenreich & Cie A Kugelzapfen ohne Vollkugel, insbesondere fuer die Lenkgestaenge von Kraftfahrzeugen
US2654265A (en) * 1951-02-10 1953-10-06 Daimler Benz Ag Steering gear
GB707324A (en) * 1951-02-10 1954-04-14 Daimler Benz Ag Improvements relating to steering gear
US2688260A (en) * 1951-02-10 1954-09-07 Daimler Benz Ag Gear for converting rotary motion into longitudinal motion
GB698778A (en) * 1953-11-11 1953-10-21 Daimler Benz Ag Improvements relating to screw and nut gearing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113469A (en) * 1959-12-19 1963-12-10 Daimler Benz Ag Steering gear
US3581585A (en) * 1969-05-26 1971-06-01 Joseph K Barnoski Harmonic oscillator apparatus
US4604911A (en) * 1982-02-26 1986-08-12 Hiroshi Teramachi Recirculating-ball rotary-to-linear converter with an improved ball return guide

Also Published As

Publication number Publication date
FR1043259A (fr) 1953-11-09
BE506054A (sv)
FR67364E (fr) 1958-03-06
GB760195A (en) 1956-10-31
CH325355A (de) 1957-10-31
CH297223A (de) 1954-03-15
GB698778A (en) 1953-10-21

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